package com.aolei.baiduface.util;

import com.baidubce.http.ApiExplorerClient;
import com.baidubce.http.HttpMethodName;
import com.baidubce.model.ApiExplorerRequest;
import com.baidubce.model.ApiExplorerResponse;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;

/**
 * 获取token类
 */
public class BaiduFaceUtil {

    /**
     * 获取权限token
     * @return 返回示例：
     * {
     * "access_token": "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567",
     * "expires_in": 2592000
     * }
     */
    public static String getAuth() {
        // 官网获取的 API Key 更新为你注册的
        String clientId = "l152GSxxvpgyZZk5ubHlzVeY";
        // 官网获取的 Secret Key 更新为你注册的
        String clientSecret = "iXFLqb5nGZz6OBrRGDvc9F1PmvLvPo8s";
        return getAuth(clientId, clientSecret);
    }

    /**
     * 获取API访问token
     * 该token有一定的有效期，需要自行管理，当失效时需重新获取.
     * @param ak - 百度云官网获取的 API Key
     * @param sk - 百度云官网获取的 Securet Key
     * @return assess_token 示例：
     * "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567"
     */
    public static String getAuth(String ak, String sk) {
        // 获取token地址
        String authHost = "https://aip.baidubce.com/oauth/2.0/token?";
        String getAccessTokenUrl = authHost
                // 1. grant_type为固定参数
                + "grant_type=client_credentials"
                // 2. 官网获取的 API Key
                + "&client_id=" + ak
                // 3. 官网获取的 Secret Key
                + "&client_secret=" + sk;
        try {
            URL realUrl = new URL(getAccessTokenUrl);
            // 打开和URL之间的连接
            HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
            connection.setRequestMethod("GET");
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.err.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String result = "";
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            /**
             * 返回结果示例
             */
            System.err.println("result:" + result);
            JSONObject jsonObject = new JSONObject(result);
            String access_token = jsonObject.getString("access_token");
            return access_token;
        } catch (Exception e) {
            System.err.printf("获取token失败！");
            e.printStackTrace(System.err);
        }
        return null;
    }

    /**
     *人脸检测
     * @param image
     */
    public static void detection(String image){
        String path = "https://aip.baidubce.com/rest/2.0/face/v3/detect";
        ApiExplorerRequest request = new ApiExplorerRequest(HttpMethodName.POST, path);


        // 设置header参数
        request.addHeaderParameter("Content-Type", "application/json;charset=UTF-8");

        byte[] encode = Base64.encode(image.getBytes(StandardCharsets.UTF_8));
        String img = new String(encode);


        // 设置jsonBody参数
        String jsonBody = "{\"image\":"+img+",\"image_type\":\"URL\"}";
        request.setJsonBody(jsonBody);

        ApiExplorerClient client = new ApiExplorerClient();

        try {
            ApiExplorerResponse response = client.sendRequest(request);
            // 返回结果格式为Json字符串
            System.out.println(response.getResult());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 人脸对比
     * @param image1
     * @param image2
     */
    public static void comparison(String image1,String image2){
        String path = "https://aip.baidubce.com/rest/2.0/face/v3/match?access_token=24.638f906e6c2259650a5209e445634e95.2592000.1661095354.282335-16165026";
        ApiExplorerRequest request = new ApiExplorerRequest(HttpMethodName.POST, path);


        // 设置header参数
        request.addHeaderParameter("Content-Type", "application/json;charset=UTF-8");
        byte[] encode1 = Base64.encode(image1.getBytes(StandardCharsets.UTF_8));
        String img1 = new String(encode1);
        byte[] encode2 = Base64.encode(image2.getBytes(StandardCharsets.UTF_8));
        String img2 = new String(encode2);


        // 设置jsonBody参数
        String jsonBody = "[{\"image\":"+img1+",\"image_type\":\"URL\"},\n{\"image\":"+img2+",\"image_type\":\"URL\"}]";
        request.setJsonBody(jsonBody);

        ApiExplorerClient client = new ApiExplorerClient();

        try {
            ApiExplorerResponse response = client.sendRequest(request);
            // 返回结果格式为Json字符串
            System.out.println(response.getResult());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 人脸注册
     * @param image
     */
    public static void register(String image,String groupId,String userId){
        String path = "https://aip.baidubce.com/rest/2.0/face/v3/faceset/user/add?access_token=24.638f906e6c2259650a5209e445634e95.2592000.1661095354.282335-16165026";
        ApiExplorerRequest request = new ApiExplorerRequest(HttpMethodName.POST, path);


        // 设置header参数
        request.addHeaderParameter("Content-Type", "application/json;charset=UTF-8");
        byte[] encode = Base64.encode(image.getBytes(StandardCharsets.UTF_8));
        String img = new String(encode);


        // 设置jsonBody参数
        String jsonBody =  "{\"image\":\""+img+"\",\"image_type\":\"URL\",\"group_id\":\""+groupId+"\",\"user_id\":\""+userId+"\"}";

        ApiExplorerClient client = new ApiExplorerClient();

        try {
            ApiExplorerResponse response = client.sendRequest(request);
            // 返回结果格式为Json字符串
            System.out.println(response.getResult());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void search(String image,String groupId){
        String path = "https://aip.baidubce.com/rest/2.0/face/v3/search?access_token=24.638f906e6c2259650a5209e445634e95.2592000.1661095354.282335-16165026";
        ApiExplorerRequest request = new ApiExplorerRequest(HttpMethodName.POST, path);


        // 设置header参数
        request.addHeaderParameter("Content-Type", "application/json;charset=UTF-8");
        byte[] encode = Base64.encode(image.getBytes(StandardCharsets.UTF_8));
        String img = new String(encode);


        // 设置jsonBody参数
        String jsonBody = "{\"image\":"+img+",\"image_type\":\"URL\",\"group_id_list\":"+groupId+"}";
        request.setJsonBody(jsonBody);

        ApiExplorerClient client = new ApiExplorerClient();

        try {
            ApiExplorerResponse response = client.sendRequest(request);
            // 返回结果格式为Json字符串
            System.out.println(response.getResult());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}
